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No. 336,611. Patented Feb. 23, 1886.

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Patented Feb. 23, 1886.

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KNITTING MACHINE.

No. 336.611. Patented Feb. 23, 1886.

| `lll W1 T N E SS E S: kwmmg UNITED STATES PATENT OFFICE.

GEORGE A. WHITE, OF BOSTON, MASSACHUSETTS.

KNI'TTING-MACHINE.

SPECIFICATION forming part of Letters Patent No.336,611, dated February 23,1886.

Application filed December 18E-l. Serial No. 150,958.

` machines equipped with reciprocating needles;

and it consists inthe improvements hereinafter described and claimed.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a side elevation and partial section of an entire machine embodying my improvements. Fig. 2 represents a top view of the upper portion of the same. Fig. 3 Vrepresents a section on linefcx, Fig. 2. Fig. 4 represents a perspective view of the machine, excepting the mechanism whereby the upper needle cylinder is prevented from rotating. Fig. 5 representsa vertical section ofthe machine as represented in Fig. l1. Fig. represents a section of the ring b3. Fig. 6 represents a side elevation of the lever, (shown edgewise in Fig. 5,) and a section of the part cooperating therewith. Fig. 7 represents a perspective view of portions ofthe machine, showing the latch-openers and fenders whereby the needle-latches are controlled. Fig. 8 represents a side elevation and partial section ofthe parts shown in Fig. 7. Y Figs. l) and 10 represent inside views of the feeds, latch-openers, and fenders. Fig. 11 represents a transverse vertical section of the upper cam-cylinder, showing the needle-path arranged for action. Fig. 12 represents a section online y y, Fig. 11. Fig. 13 represents a transverse vertical section of the upper.

needle-cylinder, showing the needle-path arranged to hold the upper needles motionless. Fig. 14 represents a portion of the lower carncylinder developed on a flat surface. Fig. 15 represents a side view of the upper needlecylinder. Fig. 16 represents a side view of the lower needle-cylinder. Fig. 17 represents a perspective view and partial section of the base ofthe machine inverted.

The same letters of reference indicate the same parts in all the figures.

In the drawings, a. represents the fixed supporting-base, to which is rigidly attached the lower needle-cylinder, b, having vertical slots (No model.)

in which are placed the usual hooked and latched needles, c.

d represents the inclosing shell or casing of the lower cam-cylinder, e. which has the needlepath for the lower needles. The casing d is fitted to. rotate on the base ai, and is provided with a bevelgear, f, meshing with a bevelgear, g, on the operating-shaft h.

t' represents the upper cam-cylinder, having the needle-path for the inverted upper needles, c, which co-operate with the lower needles, c, when the machine is used for producing ribbed work. The upper cam-cylinder and needlecylinder may be called a ribber attachment.

j represents the upper needle-cylinder, having slots for the upper needles, said cylinder being the frustum of au open or tubular cone` placed with its larger end downward, so that the upper needles are inclined, as shown in Fig. 4.

The upper needle-cylinder is contained in and supported by the upper cam-cylinder, i, an outwardly-projecting flange, 7c, secured to the upper end of the needle-cylinder, resting on the upper edge of the cam-cylinder. A standard, Z, rigidly attached to the-upper camcylinder at its upper end, and having dovetail sides at its lowerend, inserted removably in a dovetail socket in a projection, m, on the shell d, supports the upper cam-cylinder and causes it to rotate with the shell and with the lower cam-cylinder. The upperneedle-cylinder is prevented from rotating with the camcylinder i by means of a segmental bar, n,rig idly held by a standard, o, hereinafter described, over the needle-cylinder, a series of sliding bolts or detects, p, radially arranged on said segmental bar, and pins q q, arranged in pairs on the upper end of the needle-cylinder. The bolts or detents p project between the pins q q, as shown in Fig. 2, and thus engage the needle-cylinder with the bar a. The detents p are successively withdrawn from the pins q to permit the passage of the thread around the upper cam and needle cylinders by means of a cam-surface, r, at the outer edge of the slotted thread-carrying ilange, s, on theY cam-cylinder t', said cam striking pins t, projecting downwardly from the detents p, and moving each detent outwardly before the thread-carrying eye u reaches it. After the IOO- thread has passed each detent, a cam-groove, e, following the cam r, receives the pin of the displaced detent and moves it back between the pins q q, with which it engages before the next pin is withdrawn.

In this machine the upper needle-cylinder is held stationary while the upper cani-cylinder rotates. Heretofore in this class of niachines the upper needle-cylinder has been prevented from rotating with its cam-cylinder by Afeet projecting downwardly from the upper cylinder, and held by corresponding projections on the inner surface of the lower needlecylinder, the knit fabric passing between the feet on the upper cylinder and the projections on the lower cylinder, and being somewhat impeded by the grasping pressure it receives from said feet and projections.

The means employed by me,above described, obviate any interference with the fabric, the upper needle-cylinder being entirely separate from the lower, and enable the upper needlecylinder to be conveniently removed and applied. The standard 0, supporting the segmental bar a, is swiveled at its lower end in a socket, w, attached to the base a, so that it can be turned to remove the segmental bar from its operative position and allow the upper cam and needle cylinders to be removed. The standard ois secured to the socket w, when the segmental bar a is in place by a locking-lever, a, pivoted to the socket and pressed by a spring, so that a catch in its upper end enters a socket in the standard, and also by tongues b b', formed, respectively, on the standard and socket, each'tongue'entering a corresponding recess, as shown in Fig. l.

A spiral spring, e, is secured to the socket w at its lower end, and is engaged at its upper -the arrow in Fig. 2. Vhen the lever a is disengaged from the standard o, the spring c/ rst raises the standard until the projections b are disengaged from their recesses, and then acts on the pin eZ to rotate the standard in the direction indicated, thus removing the segmental bar a from its operative position, the operator having only to press inwardly on the lower end of the lever a to effect this operation.

The standard Z, that connects the upper and lower cani-cylinders, is provided with alever, e', pivoted atf to the standard Z, its lower end bearing on the upper end of the soeketed pro jection m. When it is desired to remove the standard Z from the projection m, a side pressure against the lever will cause it to raise the standard sufficiently to loosen it and to enable the operator to remove it.

An arm, g/, is pivoted at h to an ear orlug, fi', on the lower cam-cylinder. To the upper end of said arm is attached a block, j, projecting inwardly toward the needle-cylinder,

and having at its inner end a thin substantially triangular plate, k', which stands close Vthe latch-opener and the needles.

Besen to the outer surfaces of those lower needles which are held by the horizontal groove 3 of the lower cam -cylinder, hereinafter described. rlhe plate k constitutes an openerfor thelatches of the lower needles, its upper edge, which is raised slightly at its ends, projecting into the center of the eye or hook of each needle and forcing outwardly any latches that fail to fall outwardly from the hooks by gravitation. rA spiral spring, Z, placed under the pivot of the arm g', forces said arm upwardly and holds it with the upper edge of the latchopener projecting into the hooks of the lower needles, so thatif the latch-opener were moved outwardly lfrom the needles it would strike the points of the hooks7 it being therefore necessary to depress the arm g' before the latchopener can be moved away from the needles. This projection of the latch-opener into the hooks of' the needles enables it to pass with certainty between the needles and such latches as remain raised when the latch-opener reaches them, said latches being thrown outwardly or opened by the opener, its position enabling it to avoid striking and injuring the sides ofthe raised latches.

The arm g is provided on its inner side with a shoe or fender, m', which is located below the latch-opener k and bears against the lower needles through the hooks of which the latchopener is passing. The oiiice of this shoe or fender is to hold the needles firmly against the lower cylinder while the latch-opener is passing through their hooks, thus preventing the possibility of injurious contact between The shoe or fender m is attached to a shank, rz, which is contained in a socket ou the arm g', and is adjusted in said socket by means of a screw, o, bearing against the rear end of the shank n', said screw enabling the fender to be adjusted toward and from the needles for the purpose of adjusting the latch-opener laterally in the eyes of the needles.

rFhe arm g is held in its operative position by a hook or catch, p, attached to the ear i', to which the arm is pivoted, said hook projecting through a slot in the arm g' and engaging with an elastic strip, g', of steel attached to the outer side of the arm and extending across the slot therein. The strip Q is slightly curved outwardly, so that it acts as a spring, bearing against the hook p' and pressing the arm g inwardly, thus insuring a constant bearing of the fender m against the needles.

Vhen the arm g is to be turned on its pivot te separate the latch-opener and fender from the needles, it is first depressed against the upward pressure of the spiral spring Z until the latch-opener is below the needle-hooks, and the strip q is disengaged from the hook p and is then turned outwardly, as shown in Fig. 8.

Vhen the arm is being turned back to its operative position, the spiral spring yields and allows the arm to be depressed by the contact of the strip q with the hook p', until the IOO strip passes under the hook, the spring Z then raising the arm and thus engaging the strip with the hook and inserting the latch-opener into the hooks of the needles.

The block j', to which the latch-opener k is attached, hasa thread-guiding slot, 1", through which the thread passes directly to the lower needles when the ribber attachment is not used, and to the thread-guide, hereinafter described, depending from the upper cylinder when the ribber attachment is in use.

s represents an arm pivoted to ears on the upper cam cylinder, its lower end being pressed inwardly by a spring, t. The lower end of the arm s is provided with a latchopener,u,for the latches of the upper needles. Said latch-opener is a diagonal finger formed on the inwardly-turned end of the arm sf, its lower end being reduced to a point which stands in position to enter the centers of the closed eyes of the inverted upper needles and raise the latch thereof until they pass off from the upper end of the latch-opener, from which they drop onto the thread. The upper end of the latch-opener u is provided with a thread-guide or compound feed,v, which delivers the thread to both sets of needles, the latches of the upper needles in dropping from the upper end of the latch-opener u falling upon the thread passing from the feed o and forcing it into the hooks of the upper needles, the falling movement of the latches being facilitated by the loops last formed, which surround the needles and exert a downward pressure on the latches when they pass off from the latch-opener. Each upper needle after it has thus received the thread is drawn upwardly-forming a new loop through the one previously formed.

w represents au arm orguard projecting inwardlyfrom the arm s above the latch-opener u. Said guard has an inclined edge, y', which is substantially parallel with the inclined latch-opener u', and is located over the same, the latches of the upper needles passing between the edge y and the latch-opener and being prevented by said edge from swinging upwardly too far. The guard also has au inclined front side, z', which extends nearly to the lower needle-latch opener,k, and prevents the latches ofthe lower needles from being thrown upwardly by accident after passing said latch-opener, the surface z extending from the latch-opener 7c nearly to the threadfeed 'U',so that the latches of thelower needles cannot be thrown upwardly until they are in position to direct the thread into the hoo'rs of their needles.

The arm s is provided with a screw, a2,which abuts against the surface of the upper camcylinder, and acts as an adjustable stop, determining the point to which the arm s may be forced toward the needles by the spring t. Said spring presses outwardly on the upper end of the arm s above its pivot, and thus forces its lower endupwardly toward the needles.

The needle-path in the lower cam-cylinder,

which acts on the heels of the lower needles, is shown as developed on a plane surface in Fig. 14.

The needles in advance of the latch-opener k are raised by an incline, 2, to a horizontal groove, 3, and are then depressed by an inclined groove, 4, which carries them to the lowest point required to cause the loop around each needle to raise the latch thereof, and to cause each needle to withdraw from the loop..

The inclined groove 4 commuwhich is free to playin a slot, c2, in the wall of 9o the cam-cylindere, the block dzrestingloosely on a block, f2, which forms the upper side of reversed counterparts 4', 5', and 6 of the grooves 4, 5, and 6, the lower end of the block d2 extending across the groove 6 and prevent- 9 5 ing the needle-heels from entering said groove when the cam-cylinder e is rotating in direction indicated by the dotted arrow in Fig. 14, this being the direction in which the cylinder is rotated when the machine is operating normally. A reversed duplicate, d3, of the blocktrap dZ is placed over the grooves 4, 5, and 6, and normally covers the upper end of the groove 6, but does not obstruct the egress of the needle heels from said groove, but is raised, as shown in Fig. 14, by each needleheel. The blocks or traps being capable of vertical movement and of assuming their groove-obstructing positions by gravitation, are positive in their operation and not liable to stick in any improper position.

The upper surface of the groove 3 is a block, gwhich is adapted, by means of slots 7a2/z2 and screws 2 z"L entering the cylinder e through said slots, to slide horizontally, and thus form an opening at the upper side of the groove 3 at one end or the other. When the block is in the position shown in Fig. 14, the end ofthe groove 3 adjacent to the incline needle-heels dropping into the 2 is open, the groove 3 from said incline. Should the direction of rotation of the cylinder e be reversed, the block d would remain depressed, as shown in dotted lines in Fig. 14, and would therefore obstruct the upper end of the groove 6. The needle-heels would therefore ride on the upper edge of the block d3, and would thus he elevated to the block g2, which would yield, as shown in dotted lines, and allow the needleheels to drop into the groove 3. Thereafter the needles would be depressed by the groove 4 and raised by the groove 6. The direction of rotation being again reversed, the needleheels will pass up the block ddown the groove IOO IIO

4" @seen ,and up the groove', as first described. The

machine is thus operated in forming the heel, the cylinder e being oscillated to form interrupted rows of stitches alternately from left to right,and from right to left, one or more needles being dropped at each end of the series of needles after each row is formed until the heel is sufficiently narrowed, after which one or more needles are added after each row is formed until the bottom ofthe heel is sufliciently widened. This mode of operation is not new, however, and is not claimed by me. Vhen the cylindere rotates continuously, as usual, the needle-heels rest on the intermediate fixed horizontal portionjl, of the needlepath, which supports the needles at a suitable height to enable the incline or block 2 to engage and raisel them, as above described. The continuity ofthe portion j2 is interrupted by the angular ends of two blocks, k2, which are vertically movable, and are positively held at any position to which they may be adjusted by set-screws Z", passing through vertical slots in the cylinder c, the heads ofsaid screws bearing on the outer surface ot' the cylinder. These blocks, which I term shakers are used to insure the proper elevation ot' the needles to cause their latches to pass above the loops encircling the needles in case said loops are so tightly drawn as to prevent the needles from jumping77 slightly as they emerge from the inclined groove 6. When the knitting is loose and the needles are not thus restricted, the shakers are not required and are depressed below the level of the surface ji, thus obviating wear on the needle-heels and liability of too high elevation oi' the needles,which would occur if the shakers were continually used.

The lower camcylinder is vertically movable in the space between the inclosing-shell d and the needle-cylinder b, and to its lower edge is secured an internally-grooved ring, m2. n2 represents a ring with a peripheral tongue, which enters the groove in the ring m2. The inner ring, n2, is capable of moving vertically on the reduced lower end of the needle-cylinder, below the slotted needle-holding portion thereof, and is provided with inwardly-pro jecting studs o, which pass through vertical slots p2 in the needle-cylinder b. Tithin the needle-cylinder is a band, g2, held in place by lugs r2 bearing against its lower edge, and a shoulder, s?, bearing against its upper edge.

T The band q2 is capable of rotating inthe needle-cylinder b, and is provided with inclined slots t2, which receive the studs o2. Vhen the band q2 is rotated, the inclined slots, acting on the studs o2, cause the ring n to rise or fall, as the case may be, and thus raise or lower the cam-cylinder e and regulate the length of the stitches. The band q2 is rotated by means of a rock-shaft, u2, journaled in the base a and provided at its outer end with an operating knob or handle, and at its inner end with an arm, o2, which enters a slot in a block, w?, affixed to the bandg. (See Fig. 17, in which the band anda portion of the base are shown in an' inverted position.) The rotation of the rockshatt causes the arm c2 to rotate the band g2.

y2 represents an arm attached to the band q2, and provided at its outer end with an indicating-nger, z2, projecting through a slot in the base @,over suitable marks or graduations on the exterior of the base, whereby the extent of the vertical adjustment of the camcylinder is indicated.

The slotted portion of the lower needle-cylinder is enlarged at a3, and to said enlarged portion is attached a narrow ring, b3, which extends across the needle-holding slots, and is provided with a shallow internal groove, c', of sufficient depth to receive and support the heels of those needles which are inoperative, as when the machine is forming the heel. Vhen the machine is thus used, the ribber attachment is removed, and of the needles in the lower cylinder which are raised and used in the operation every alternate one is raised and supported by the engagement of its heel with the groove c3.

e3 represents a ring composed of hinged and flanged sections, which is placed upon the upper edge of the inclosing-shell d, and surrounds the needle-cylinder b. rPhe iiange of said ring projects into a recess, f3, in the slotted portion of the needle-cylinder above the enlargement aand prevents the needles from being entirely withdrawn from the needle-v cylinder, the heels of the needles being arrested by said flange. This sectional flanged ring is shown in my application for Letters Patent filed in January, 1883; but in said application the enlargement a3 of the needlecylinder and the grooved ring b3, attached thereto, are not shown, and the sectional ring is shown as provided with a groove to engage and support the heels of the raised needles.

The enlargement of the needle-cylinder and the grooved ring attached thereto are used as an improvement on the grooved flanged sectional ring, as shown in my former application.

The outward extension of the needle-holding slots to the grooved ring b3, caused by the enlargement ofthe cylinder, enables the slots to bear against the sides of the needle-heels from their inner to their outer ends, and thus prevent the needles from turning on their own axes, while the rigid attachment of the ring bs to the cylinder enables the ring to hold the needle-heels and prevent the needles from tipping outwardly when the sectional ring is re-Y moved to enable removal or adjustment of'one or more needles to be effected. It is sometimes necessary to remove the sectional ring for such purposes, so that when the sectional ring is used to hold the raised needle-heels, as in my former application, the raised needles are deprived of their support when the ring is removed, and are caused to tip by thestrain exerted on their upper ends by the weighted fabric suspended from them.

The needle-path of the upper cam-cylinder,l z, may be described as follows: Said cylinder.

TOO

IIO

has a vertically-adj ustable block, y, having a horizontal side, 7, and two inclined sides, 8 9, a fixed horizontal shoulder or ledge, if', a vertically-adjustable block, 3, having a horizontal side, 10, and an inclined side, 11, a bridge, js, pivoted at 7c3, a tongue, Z3, pivoted at ma, a xed inclined block, o, and a short fixed block, n3. lVhen the upper cam-cylinder is not in use, the adjustable blocks g3 3 are depressed, as shown in Fig. 18, so that their upper edges and the upper edge of the bridge j3 form continuations of the horizontal ledge h3, a continuous horizontal support being thus afforded for the heel of the upper needles, so that the rotation of the cam-cylinder z' gives no movement to said needles. The machine is thus used when it is desired to temporarily discontinue the use of the upper needles without disconnecting them with their cylinder from the machine.

Vhen both the upper and lower needles are in use in making ribbed work, the blocks g3 t are raised, as shown in Fig. 11. llhe edge 8 of the block g3 depresses the upper needles in advance of the point where the stitches are formed sufficiently to push the latches of said needles downwardly through the loops surrounding the needles, and allow said latches to swing downwardly by their own weight. The upper needles, after being thus depressed, are raised by the xed inclined block o3,immedi ately in advance ofthe fenderm,in time to cause theirlatches to pass over said fender, and are then slightly depressed by the lower edge of the small fixed block n, and at the same time to draw the reversed latches upwardly into the loops around the upper needles to enable the latch-Opener u' to engage with the latches and swing them upwardly, as shown'in Fig. 7. The thread passes through the feed v to both the upper and lower needles, and each upper needle-latch as it passes off from the latchopener u is drawn downwardly upon the thread by the strain of the fabric-loop surrounding the needle and latch, the thread being thus held between the latch and hook. After this the upper end of the tongues Z3 carries the upper needles upwardly to the upper edge of the block i3, thus causing each upper needle to draw a loop of thread through and release the loop last formed about it. The free end of the bridge j3, bearing on the block i5, yields to allow each needle-heel to pass up the tongue Z3 and onto the block, as shown in Fig. 11. After the block ipasses, the needles are supported by the horizontal ledge h3. The block ga is attached to T-plate p3, which is capable of sliding in guides formed in the inner surface of the upper cam-cylinder. A thumbscrew, g3, passing through a slot in the camcylinder, enters the block g3, and by the pressure cf its head against the outer surface of the cam-cylinder holds said -block positively in either of the positions snown in Figs. 11 and 13. The adjustment of the block i3 determines the height to which the upper needles are raised in forming their loops or stitches, and thus determines the length of each stitch. Said block is secured by means of a spring, r3, Fig. 5, to a segmental grooved slide, s3, which is tted to slide upon a tongued ring, Z3, Figs. 5

and l5. Said ring is capable of being raised and lowered on the outer surface of the upper needle-cylinder, j, and is provided with inwardly-projecting studs a3, projecting through vertical slots t3 in the upper end of the upper needle-cylinder, j, into inclined slots wS in a band, g3, which is adapted to rotate between two shoulders on the inner surface of the needle-cylinderj, and is provided with a handle, z3, whereby it may be rotated. The rotation of the band y3 causes the inclined slots to raise or lower the ring t3, which in turn raises or lowers the segmental slide s3 and stitch-adj usting block i3. The spring r3 connecting the block is, the slide s3 yields suiiiciently to compensate for the slight difference in direction between the movements of the block and slide, the former moving diagonally on the inclined inner surface of the camcylinder, while the latter moves vertically.

I claiml. The combination of the upper needlecylinder, the rotary upper cam-cylinder inclosing and supporting said needle-cylinder, a fixed segmental bar over the needle-cylinder provided with sliding detents engaged with the needle-cylinder, the thread-guide rotating with the needle-cylinder, and cams also rotating with the cam-cylinder, whereby each de` tent is displaced in advance of the thread and replaced after the thread carried by the threadguide has passed, as set forth.

2. The combination of the stationary lower needle-cylinder, the lower cam-cylinder rotating therearound, the upper cam-cylinder, a connecting device, substantially as described, whereby the upper 4cam-cylinder is detachably connected to and rotated by the lower cam-cylinder, the upper needle-cylinder supported wholly by the upper` cam-cylinder and entirely disconnected from the lower needle-cylinder, an independent fixed bar over the upper needle-cylinder, and devices, substantially as described, whereby the upper needle-cylinder is engaged with said bar, and thereby made stationary or prevented from rotating with the cani-cylinder supporting it, as set forth."

3. The combination of the upper needle cylinder, the segmental bar n, having the sliding detents p, whereby the upper needlecylinder may be held stationary, the swiveled standard supporting said bar, the locking devices for said standard, and the spring whereby said standard is raised and rotated when unlocked, as set forth.

4. The upper cam-cylinder having the arm or standard Z, combined with the lower camcylinder having the soclreted projection m, formed to engage with the lower end of said IOC standard, and the lever e/, pivoted to the standard and bearing on the projection m, as set forth.

5. The combination, with the lower needlecylinder and its needles and operating mechd f/anism for the latter, of the cam-cylinder provided with a projection, the lever g/, pivoted to said projection and provided with the latch-opener k, which enters the eyes of the needles, the shoe or fender m, which bears against the front sides of the needles, means, substantially as described, for pressing the Io lever and its attachments inwardly toward the needles, and means whereby the shoe or fender may be adjusted toward or from the lever to adjust the latch-opener relatively to the eyes of the needles, as set forth.

6. nThe combination, with the lower camcylinder provided with aprojection, thelower needle-cylinder and its needles,4 of the slotted arm g', pivoted to the projection on the camcylinder, and provided at its upper end with 2o the latch-opener k', the spring Z, whereby the lever g is pressed upwardly, and the hook p', `projecting through the slot in'the arm, and the elastic metal strip on said lever engaged with said hook, as set forth.

7. The combination, with the upper needlecylinder, its needles, and their operative Y mechanism, of the upper cam-cylinder, the

arm s', pivoted thereto, and the latch-opener secured to said arm and consisting of the diagonal finger pointed at its lower end and 4o having an inclined edge, y', which is substantially parallel with the diagonal latch-opener, as set forth.

9. The combination, with the upper and lower needle-cylinders, their needles and the operating mechanism for said needles, of the upper and lower cam-cylinders, the latchopener for the lower needles, a lever pivoted to the lower cam-cylinder, supporting said latch-opener, as described, the lever s', pivoted 5o to the upper cam-cylinder, the latch-opener u', formed as described and secured to said lever s, and the arm or guard fw', also secured to the lever s, and having the inclined surfaces y and z', as set forth.

10. The combination of the upper needlecylinder and its needles, the uppercam-cylinder having the iiXed ledge or shoulder h3, the adjustable three-sided block g3, the Xed ineline o5, co-operating with one side of said 6o block, the short fixed block a3, whereby the upper needles are depressed after being raised by the incline o3, the pivoted tongue Z3, and the adjustable block 3, against which the tongue bears, as set forth.

11. The upper cam-cylinder provided with the fixed ledge or shoulder h3, the adjustable block g3, the pivoted bridgeja, and the adjustcylinder and its needles, the upper cani-cyl inder having the eXternally-tongued vertically-movable ring on its outer surface, and the adjustable block i3 on its inner surface, the segmental slide s3, tted to move in the tongued ring, a spring, rj, connecting said slide to the adjustable block i3, and means, substantially as described, whereby the tongued ring may be raised and lowered, as set forth.

13. The combination of the lower needles, the lower needle-cylinder, and the lower camcylinder, provided with slots b2, and having the needle-path composed of the horizontal groove 3, the inclined grooves 4t 5 6 4 5 6', and the ledge or shoulder ji, with the blocks f2, and the loose blocks or traps resting on said blocks f 2, and on the shoulder 52, and normally obstructing the grooves 6 6', and provided with pins c, entering said slots b2 in the lower cam-cylinder, whereby said traps are enabled to move or yield upwardly but not laterally, and are permitted to assume their groove-obstructing positions by gravitation, as set forth.

14. The combination of the lower needlecylinder and the rotating vertically-movable lower cam-cylinder having` the grooved ring m2, attached to its lower edge, with the nonrotating vertically-movable sectional ring n on the lower needle-cylinder, provided with a tongue tting the groove of the ring m2, and provided with studs o2, the band g2, having inclined slots receiving said studs, and mechanism, substantially as described, whereby said band may be rotated to raise and lower the ring m2 with the lower cam-cylinder, as set forth.

15. The combination of the lower cam-cylinder having the grooved ring m2, the lower needle-cylinder having vertical slots p2, the sectional ring n2 on the exterior of the needlecylinder, provided with a tongue fitting the grooved ring m2, and provided with studs 02, projecting inwardly through the vertical slots in the' needle-cylinder, the rotary band g within the needle-cylinder, having inclined slots receiving the studs o2, the base c, and the rock-shaft u2, journaled in the base, and having an arm engaged with the band g2, as set forth.

1G. The combination, with the verticallymovable lower cam-cylinder, e, of the verticallyslotted needle cylinder, the sectional tongued ring on the outside of said needlecylinder engaged with the grooved ring of the cam-cylinder, and having studs o2, the rotary band Q2 within the needle-cylinder, having inclined slots receiving the studs o2, means, as described, whereby said band may be rotated, an indicating-finger connected with said band, the base a, provided with marks and graduations on the exterior of the basel cooperating with said finger to indicate the IOO extent of the vertical adjustment of the eam- In testimony whereof` Ihavesigned my name cylinder, as set forth. to this specification, in the presence of two ro X 17. The lower needle-cylinder having the subscribing witnesses, this 17th day of Deneedle-holdingy slots in its periphery, the peoember, 1884.

ripheral enlargement a3, through which said GEORGE A. WHITE. slots pass, and the continuous internally- W'tnesses: grooved ring b3, secured to said enlargement C. F. BROWN,

and crossing the slots therein, as set forth. H. BROWN. 

